Nokia T66520 - Manual (Page 31)

MW1122 User Manual
E Copyright Nokia Networks Oy C33902002SE_00 30
Figure 20 Choosing the VCC2 for tunneling example
4.8 Point-to-Point Protocol over Ethernet (PPPoE)
Standard PPPoE mode is used when MW1122 is operating as a bridge.
PPPoE protocol defines how PPP sessions are mapped into Ethernet
packets. When MW1122 operates as a bridge, this protocol is
transparent to MW1122.
4.9 Payload encapsulations
Both routed and bridged protocols are encapsulated in the ATM link by
using either RFC 2684 LLC/SNAP encapsulation or VC multiplexing.
MW1122 also supports PPP over AAL5 encapsulation, in which
routed protocols are first encapsulated in PPP (RFC 1661). PPP is then
encapsulated in ATM according to the IETF PPP over AAL5 using
RFC 2364 VC multiplexing or LLC/NLPID encapsulation.
4.10 Access list authorisation
When a wireless LAN is used, it is important to be able to control the
clients accessing to MW1122. Therefore, MAC-address-based access
control may be used. It prevents all communications to a such client
whose MAC address does not appear on the access list. When a new
client is brought to the network, its MAC address needs to be added to